Vilcún weather in December

In December, Vilcún sees average daytime highs of 20°C and overnight lows near 9°C, with 89 mm of rain across 8.7 wet days and about 14.7 hours of daylight. It is the 4th-warmest and 9th-wettest month of the year here.

Highs climb over the month, from about 19°C in the first days to 21°C by the end. The sky is clear or mostly clear about 41% of the time in December, and the air most often feels dry.

Daylight stretches from about 14 h 30 min at the start of December to 14 h 42 min by month's end. Set against the rest of the year, December is Vilcún's 4th-clearest and 6th-windiest month. For the whole year in context, see Vilcún's year-round climate.

Daytime high
20°
4th warmest
Overnight low
9th coldest
Rainfall
89 mm
8.7 wet days
Daylight
14 h 42 min
6:24 AM – 9:06 PM
Cloud cover
50%
4th clearest
Wind
9 km/h
6th windiest
Solar energy
7.41 kWh/m²
Travel score
6.7
out of 10

Vilcún is settlement in Chile.

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 19°C in the first days to 21°C by the end.

A typical December day in Vilcún reaches about 20°C in the afternoon and slips back to 9°C overnight — a 11°C spread between the day's warmth and the night's chill. On most days the high lands between 15°C and 25°C. Set against its neighbours, December runs about 2°C warmer than November and about 2°C cooler than January.

10°20°30°151015202531
Avg high (°C)Avg low (°C)
1198
2198
3198
4198
5198
6198
7198
8198
9198
10208
11208
12209
13209
14209
15209
16209
17209
18209
19209
20209
21209
22209
23209
24219
25219
26219
27219
28219
29219
302110
312110

How December really feels in Vilcún

Once humidity and wind are folded in, December averages 0 days that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.

Days feeling ≥ 32°C
0
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

December sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Vilcún weather by month

How December compares with the rest of the year at a glance. December is the 4th-warmest and 9th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan22° / 10°495.7014.47.8
Feb23° / 10°515.1013.58.0
Mar20° / 767.3012.37.0
Apr16° / 14010.70115.1
May13° / 23814.60.29.93.3
Jun11° / 34218.70.69.42.0
Jul10° / 28017.71.49.61.9
Aug12° / 24916.60.610.52.5
Sep14° / 15313.40.411.73.5
Oct15° / 14312.70134.5
Nov18° / 10210.3014.15.6
Dec20° / 898.7014.76.7

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 41% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 16% of December, with mostly cloudy or overcast conditions the remaining 43%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15050
25149
35149
45248
55347
65347
75347
85347
95446
105446
115446
125545
135545
145545
155545
165644
175644
185743
195743
205842
215842
225842
235941
245941
256139
266139
276238
286337
296337
306337
316436

Chance of precipitation in December

Any precipitation

Vilcún gets around 89 mm of rain over 8.7 wet days in December. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 27% and peaks near 30% on the wettest days.

0%10%20%30%40%151015202531
Rain chance (%)
130
229
329
429
529
629
728
828
928
1027
1127
1227
1327
1427
1527
1627
1727
1827
1927
2027
2127
2227
2327
2427
2527
2627
2726
2826
2926
3026
3126

Humidity in December

DryComfortableHumidMuggyOppressiveMiserable

Most of December feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, December lands in the dry band about 90% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)
19550
29550
39460
49460
59460
69370
79370
89370
99370
109370
119370
129370
139370
149370
159370
169280
179280
189280
199280
209190
219190
2289101
2388111
2487121
2586131
2686131
2785141
2884151
2983161
3083161
3183161

Wind in December

Winds average 9 km/h in December.

Across December, daily wind ranges from about 9 km/h on the calmest days to 9 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
19calm
29calm
39calm
49calm
59calm
69calm
79calm
89calm
99calm
109calm
119calm
129calm
139calm
149calm
159calm
169calm
179calm
189calm
199calm
209calm
219calm
229calm
239calm
249calm
259calm
269calm
279calm
289calm
299calm
309calm
319calm

Sunrise & sunset in December

DaylightNight

Daylight runs from about 14 h 30 min at the start of December to 14 h 42 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 12 minutes over December. Sunrise moves from 6:23 AM to 6:32 AM, and sunset from 8:54 PM to 9:12 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.56:238:54
214.56:238:55
314.56:238:56
414.66:238:57
514.66:238:57
614.66:238:58
714.66:238:59
814.66:239:00
914.66:239:01
1014.66:239:02
1114.76:239:02
1214.76:239:03
1314.76:249:04
1414.76:249:04
1514.76:249:05
1614.76:249:06
1714.76:259:06
1814.76:259:07
1914.76:259:08
2014.76:269:08
2114.76:269:09
2214.76:279:09
2314.76:279:10
2414.76:289:10
2514.76:289:10
2614.76:299:11
2714.76:299:11
2814.76:309:11
2914.76:319:12
3014.76:319:12
3114.76:329:12

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 7.41 kWh/m².

For context, solar energy here swings from a low near 1.41 kWh/m² to a high of 7.72 kWh/m² in January across the year — December's 7.41 kWh/m² sits near the top of that range.

02468151015202531
Solar energy (kWh/m²)Level
17.1Intense
27.1Intense
37.1Intense
47.2Intense
57.2Intense
67.2Intense
77.3Intense
87.3Intense
97.3Intense
107.3Intense
117.3Intense
127.4Intense
137.4Intense
147.4Intense
157.4Intense
167.4Intense
177.5Intense
187.5Intense
197.5Intense
207.5Intense
217.5Intense
227.5Intense
237.5Intense
247.6Intense
257.6Intense
267.6Intense
277.6Intense
287.6Intense
297.6Intense
307.7Intense
317.7Intense
Planning a trip in December

Hazard calendar for Vilcún

In seasonPeak

None of Vilcún's seasonal hazards are active in December. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.

Vilcún's rainy season runs May–August, when most of the year's rain falls.

Rainy season
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is December a good time to visit Vilcún?

Our two travel scores rate December for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

6.7
Sightseeing
4th-best month of the year
3.4
Beach & pool
4th-best month of the year

December is a reasonable time to visit Vilcún for sightseeing.

What to pack for Vilcún in December

From December's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In December, Vilcún sees daytime highs around 20°C and nights near 9°C. Pack sun protection. Worth having: rain gear. About 9 days see rain.

sun protectionrain gear

UV index in Vilcún in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 12 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Vilcún peaks around December 20 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 17 at about 2 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 8 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highModerateLowModerateVery highExtremeDec 20UV 12Jun 17UV 2
UV index (midday)Level
Jan11Extreme
Feb11Extreme
Mar8Very high
Apr4Moderate
May2Moderate
Jun2Low
Jul2Moderate
Aug3Moderate
Sep5Moderate
Oct8Very high
Nov10Very high
Dec12Extreme

Air quality in Vilcún in December

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where December falls, not just the annual average.

Air quality in Vilcún is worst in March — around 28 µg/m³ PM2.5 (moderate), about 3.7× the cleanest month (January, 8 µg/m³).

Modeled monthly averages (CAMS reanalysis, 2015–2024).

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodMar 1927 µg/m³Jan 128 µg/m³
PM2.5 (µg/m³)Level
Jan8Good
Feb9Good
Mar28Moderate
Apr19Moderate
May11Good
Jun8Good
Jul9Good
Aug10Good
Sep11Good
Oct10Good
Nov9Good
Dec8Good
Location & terrain

Where is Vilcún?

Vilcún sits at 38.7°S, 72.2°W, 295 m above sea level, in Chile. The nearest listed city is Lautaro, 24 km away.

Topography around Vilcún

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Vilcún.

Within 3 km, the terrain around Vilcún has only modest variations in elevation — a maximum elevation change of 106 m around an average of 305 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 525 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,090 m.

The land around Vilcún is covered by cropland (40%), grassland (32%) and trees (24%) within 3 km, trees (37%), cropland (36%) and grassland (26%) within 16 km, and trees (59%) within 80 km.

3 km
106 m
16 km
525 m
80 km
3,090 m
treesgrasslandcroplandartificial surfacesbare terrainwater
December weather nearby: Lautaro 24 km · Temuco 33 km · Cunco 34 km · Padre Las Casas 34 km · Freire 47 km · Labranza 47 km · Victoria 49 km · Pitrufquén 50 km

Chile travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type C / F / L
220 V · 50 Hz
Prices
≈ 48% of US
price level, 2025
GDP per capita
$17,995
2025
Happiness
6.3 / 10
World Happiness, 2025
Safe drinking water
98%
of population, 2024
Homicide rate
6.3
per 100k, 2023
Road deaths
14.9
per 100k/yr, 2019
Income group
High
World Bank
English
Moderate
EF EPI 517
Religion
Catholic 57%none 26%Evangelical or Protestant 16%other Christians and traditions related to Christ 1%

Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.

Data sources

Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Vilcún (-38.6688°, -72.2257°, elevation 295 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).